Senior Backend Engineer - Platform (Inbox)

Proton

Join Proton and build a better internet where privacy is the default At Proton, we believe that privacy is a fundamental human right and the cornerstone of democracy. Since our inception in 2014, founded by a team of scientists from CERN, we have dedicated ourselves to providing free and open-source technology to millions worldwide, ensuring access to privacy, security, and freedom online. Our journey began with Proton Mail, the largest secure email service globally, and has since expanded to include Proton VPN, Proton Calendar, Proton Drive, and Proton Pass. These tools empower individuals and organizations to take control of their personal data, break away from Big Tech’s invasive practices, and defeat censorship. Our work impacts hundreds of millions of lives, from activists on the front lines defending freedom to leaders in governments protecting sensitive information. In some cases, Proton’s services have even been instrumental in saving lives by enabling secure and private communications in high-risk situations. Proton is a profitable company that does not rely upon VC funding, supporting over 100 million user accounts with a growing team of over 500 people from over 50 different countries, from the world's top companies and universities. We value intelligence, learning potential, and ambition in our hiring process. Adaptability is key as we navigate uncharted territories and redefine how business is conducted online. Hiring at Proton is highly selective, with less than 1% of candidates hired. We believe smaller teams of exceptional talent will always prevail over larger teams with lower talent density. You will have the opportunity work with many of the world's top minds in their fields, ranging from former international math and science olympiad winners to chess champions. We have a global mindset and big ambitions but remain a start-up at heart. We value empowerment and flexibility and keep our structure flat to keep moving fast and avoid unnecessary politics. Tired of blending into the crowd? Join us and do work you can truly be proud of. Check our open-source projects here! The Team Our business unit, Inbox, is a cross-functional team of about 60 engineers, product managers, designers and data analysts driving the development of Proton Mail, the company’s flagship product, and Proton Calendar. Our mission is to create an end-to-end encrypted solution with a better user experience than any other productivity products on the market. While it is not always an easy journey, it is one that offers the chance to create meaningful impact and drive lasting change that we are fully committed to. The Inbox Desktop team is responsible for developing desktop clients of Inbox, specifically the Proton Mail Desktop App, Proton Mail Bridge, and the Export tool. We are in the process of rebuilding our client applications on a new, innovative technology stack centred around cross-platform Rust code. We are looking for a Senior Software Engineer to take the technical ownership of the Proton Mail Desktop App on Windows and Linux platforms. Currently, we use many languages and frameworks in the team like Golang, C++, Qt, JS, TypeScript, React, or Electron. We use standard tools for communication and work organization (Git, GitLab, GitHub, GitLab CI, Jira, Confluence). Our backend runs on premise in Proton’s data centers, and all our client-code is open source and GPL3. Purpose of the role As a Senior Software Engineer in the Inbox Desktop team, you will play a crucial role in driving the development of one of Proton's most vital desktop offerings, the Proton Mail Desktop App. We expect you to be customer-centric, continuous learner, passionate about technology and usability. You are adept at turning technical complexities into seamless user experiences. Effective teamwork, data-driven decision-making, using APIs wisely, collaboration with Product, Design, and with other teams are essential aspects of this role. In the Inbox organization, we believe that a psychologically safe environment is critical to foster innovation, collaboration, and growth. We are rooted in science, and according to both academic research and empirical evidence, teams that feel safe to take risks and express their ideas are more likely to be innovative and perform better: you will play a key role in helping us creating such an environment across the entire organization.  What you will do * Research: Assessing new technologies, supporting cross team and cross business unit technical decision making. * Work breakdown: Transforming product specifications into technical requirements and lead your team to their successful implementation. * Product development: Ensuring high-quality user experiences within our product portfolio by implementing, deploying and maintaining existing and new features. * Scalability: Enhancing software development lifecycle, tools, and processes to improve developer experience and to ensure our solutions are scalable. * Coding: Writing clear, concise and testable code to maintain and elevate the quality of our codebase. * Project management: Managing the scoping, planning and execution of new features, technical initiatives and greenfield projects. * Mentoring: Fostering a culture of learning, creativity, and accountability for the best possible work through mentorship and team development, role modelling quality assurance and performance optimization. Job requirements While we prefer candidates who cover the entire skillset, don't hesitate to apply if you're not an exact match, as we're willing to help you grow in certain areas. * Experience: Significant, relevant professional software development experience with Rust programming language, or with very strong background in modern C++ and reasonably complex Rust pet projects. * Desktop software development: Experience in developing high quality, fast, Windows and Linux cross-platform desktop applications. Familiarity with different native and cross-platform desktop UI frameworks (e.g. Avalonia UI, Qt, Electron, etc.). Experience in working both on user interface and on business logic. * Product mindset: A product mindset with a focus on offering outstanding user experience in a successful business environment. Familiarity with key business and product performance metrics. * Engineering leadership: Ability to make architectural decisions and contribute to strategic planning and product directions. Experience in developing scalable engineering solutions. Able to write effective engineering documents (size, quality, content). * Collaborative Skills: Proven ability to work collaboratively in a team environment, excellent written communication skills, and experience working in a distributed team. * Problem-solving: Strong problem-solving skills and the ability to troubleshoot customer issues remotely while protecting our user’s privacy. Knows what proactive solutions to implement to prepare for such scenarios. * Security focus: Understanding of secure coding practices and a commitment to maintaining high levels of security and privacy. * Bachelor's or Master's degree: In Computer Science, Software Engineering, or a related field. Bonus Points For: * Experience with macOS or mobile cross-platform development.  * Familiarity with using unidirectional data-flow (a.k.a. Elm-like) frameworks * Experience with Grafana, Metabase or other monitoring platforms. * Experience in B2B, preferably in online privacy and/or productivity contexts. What We Offer: * Office First: Collaboration is easier and more effective in person, which is why we have offices in Geneva, Zurich, Prague, Barcelona, Paris, London, Vilnius, Skopje, and Taipei. You can also enjoy working from home up to 30% of the time, while enjoying great company during our three core days in the office. All of our teams are based in Europe (same timezone +/- 1 hour). * Technology: You can work on introducing new technologies, both for green field projects but also for existing systems. We provide all the devices and software you need to excel in your role, ensuring you have the best tools at your disposal to achieve your goals. * Food: Lunch and snacks are provided by Proton every day at our offices. * Transport: We support our employees with transport costs through subsidizing public transport, bike allowances, or parking spaces based on your office location. * Stock Options: At Proton, we are all owners of the company and you get stock options when you join us. * Flexible Working: You can define your own working hours as long as it works with team meetings. * Learning and Development: We are committed to your professional growth. Proton offers various learning opportunities, including training programs, conferences and events, and continual learning. * Employee Benefits: Comprehensive health insurance plans, competitive retirement savings options, generous vacation and leave policies, and wellness programs. * Work that Matters: Proton is a community-first organization, started with the support of a crowdfunding campaign and built with community input. To this day, Proton’s only source of revenue is user subscriptions. Over 100 million people trust and support Proton, and we put our users and community first in everything we do. Read more about our impact here. Our Commitment to Diversity and Inclusion At Proton, we believe diversity drives innovation and strengthens our mission to provide privacy as a default for all. We are committed to fostering an inclusive environment where all individuals, regardless of race, ethnicity, gender, age, sexual orientation, physical ability, or socio-economic background, feel valued and empowered. We strive to create equal opportunities, promote open dialogue, and support continuous learning to ensure every voice is heard and respected. If you need any extra support or reasonable adjustments during the hiring process, please let your talent partner know. Candidate Privacy Notice When you apply for a position, refer a candidate, or are considered for a role at Proton Technologies AG (Proton, we, us, or our), your information is stored in Greenhouse, in accordance with their Service Privacy Policy. This information is used to evaluate your suitability for the posted position. We also retain this information for consideration for future roles that you may apply for or that we believe may align with your background and skills. If we no longer have a legitimate business need to process your information, we will either delete or anonymize it. Should you have any inquiries about how we use or manage your information, or if you wish to access, correct, or delete your data, please contact our privacy team at careers@proton.ch. Proton does not accept unsolicited resumes from any sources other than directly from candidates. We will not pay a fee for any placement resulting from an unsolicited offer, even if the candidate is subsequently hired by Proton. To learn more about our privacy policy, please visit our privacy policy page. #LI-ONSITE

Superchat

At Superchat, we're rebuilding how businesses talk to their customers. The phone call, the contact form, the support ticket: all of it is being replaced by messaging and AI. We're building the platform that runs underneath. Founded in 2020, Superchat has become the platform of choice for 10,000+ businesses worldwide, from globally recognized brands like Allianz, Auto1, Enpal, Danone, and GASAG to the small businesses, dental practices, and one-person startups that need to look bigger than they are. Today, millions of messages flow through Superchat every single day. We started as a unified inbox: one place for every channel a customer might pick, WhatsApp, email, SMS, Instagram. Then ChatGPT happened, and the second chapter began: AI agents that respond across chat, email, and voice at the quality of the best human teams. We're 100 people, profitable, and have raised €18M in funding (last round 4.5 years ago, we've been growing on our own money since). Headquartered in Berlin. We're hiring an Engineering Manager to lead one or more squads. You'll partner directly with the CTO to develop engineers, ship reliable software, and shape how our team works as we scale. WHO WE WANT Experienced engineering people manager. You bring 3–5+ years of people management experience in software engineering, ideally in B2B SaaS environments. Strong delivery leadership. You have a track record of leading squads of 5-10 engineers through full product and delivery cycles. Technically credible. You come from a strong technical background as a backend or full-stack engineer (former Senior Engineer or equivalent). You read code comfortably, engage on server-side architecture and trade-offs, and contribute meaningfully to technical discussions about the systems your squads own. Backend experience in Java/Kotlin is a plus, since our backend runs on Kotlin/Quarkus. Builder of strong engineers. Your former reports got promoted, took on broader scope, or grew into roles that better matched their strengths. Strong hiring instinct. You have experience hiring engineers and successfully closing high-quality candidates. Comfortable with difficult conversations. You are comfortable having clear, honest, and sometimes difficult conversations when needed. Clear communicator. You are fluent in written and spoken English. You communicate clearly across engineering, product, and leadership teams and create alignment through strong written and verbal communication. WHO WE DON’T WANT Pure delivery manager. You treat engineering as a ticketing operation focused only on timelines and task tracking instead of product quality, technical health, and team growth. We need engineering leaders, not project coordinators. Engineer escaping into management. You moved into management mainly to stop coding rather than because you genuinely enjoy leading, coaching, and developing people. This role requires a real interest in people leadership, not retreating from technical work. Top-down architecture owner. You want to personally own architecture decisions alone instead of enabling strong technical ownership within engineering teams. Engineers own architecture decisions - you participate, challenge, and sponsor the right investments. First-time people manager. You are entering engineering management for the first time and have not yet experienced leading teams through performance, hiring, and scaling challenges. We’re looking for someone who has already managed engineering teams successfully. Remote-only operator. You prefer fully remote work and don’t want to actively build relationships and culture in person with the team. We believe strong engineering leadership requires regular in-person collaboration and presence in Berlin. YOUR DAY TO DAY * You run weekly or bi-weekly 1:1s with each of your direct reports to support growth, alignment, and execution * You lead growth conversations and performance reviews - including development planning, quarterly check-ins, and calibration sessions with peers and the CTO * You work closely with PMs and senior engineers on cycle planning, scoping, prioritization, dependencies, and team capacity * You actively participate in architecture and tech debt discussions - challenging decisions, supporting strong technical direction, and sponsoring long-term investments * You play a key role in hiring - from interviewing and feedback to debriefs and closing strong candidates * You collaborate closely across squads with other Engineering Managers and the CTO to maintain alignment and execution quality * You handle difficult conversations directly and thoughtfully - including performance issues, conflicts, and compensation discussions, with support from the CTO where needed STAKEHOLDERS CTO: Your manager and partner on people development, calibration, technical direction Direct Reports: Engineers in your squad(s); you own their development, performance, and growth Product Manager(s): PMs own what and why; you own how (delivery) and who (people) People Ops: Partner on compensation and processes WHY PEOPLE CHOOSE US Mission that matters. Real impact on small businesses, not abstract metrics Funded with conviction. $16.5M raised with a strong trajectory toward profitability Modern stack. Kotlin/Quarkus, AWS, TypeScript/React/Next.js, and LangGraph for AI-powered features Squad-based organization. Each squad owns its domain end-to-end with real ownership and autonomy Product-led structure. PMs report directly to the CPO, keeping product strategy focused, consistent, and clearly prioritized Engineers own technical decisions. Engineering Managers participate, challenge, and sponsor decisions - but engineering judgment stays with the team Hybrid by design. Our Berlin office in Prenzlauer Berg is the center of gravity, with two work-from-home days as the standard setup Direct feedback culture. Honest, direct, and kind feedback is part of how we work together - in 1:1s, retrospectives, and everyday collaboration Two clear career tracks. We support both Individual Contributor growth (up to Staff level) and Engineering Management paths, with explicit reversibility between both Benefits & Culture * Choose between an Urban Sports Club/John Reed membership or a public transport/Dance subscription * Regular company and team events * Annual personal development budget of €500 for conferences, courses, books, career coaching, and more * An inclusive and exciting startup culture that enables fast professional and personal growth * Beautiful office in the heart of Berlin (Prenzlauer Allee 242) with free snacks, drinks, and top-notch equipment We want to build a community, not just a company. It’s important to us to create an environment where people genuinely enjoy spending time together - whether that’s through HYROX training, golfing, beer pong tournaments, running clubs, Warhammer, weekend activities, or whatever kind of community you’d like to help build here! We're looking for people with passion, grit, and integrity. You're encouraged to apply even if your experience doesn't precisely match the description. At Superchat, we welcome diverse perspectives and people who think rigorously. Relocating to Berlin? We support you with practical relocation help. You'll feel home in no time. We look forward to your application! 🙂 With your application you agree to our privacy policy.

Frontify

We're all about helping brands turn ideas into impact. Frontify’s brand platform transforms how teams organize digital assets, collaborate on projects, and create engaging campaigns. Our people empower thousands of marketers and designers — including teams at Uber, Microsoft, Volkswagen, and Telefónica — to build engaging brands. With headquarters in St. Gallen, Switzerland, and offices in London and New York City, we share a vibrant culture built on creativity, collaboration, inclusion, and joy. And we’re on the lookout for new team members to share our vision. If you’re ready for a brand-new adventure, keep reading! Your team Your new team is a group of motivated, collaborative, and innovative Engineers. Working on-site, hybrid, or fully remote, they come together to create and evolve a well-loved product but always keep room for new ideas and approaches. Outside of work, they’re parents, gamers, bookworms, adrenaline junkies, and so much more. Your mission Our mission is to evolve Frontify’s platform capabilities and deliver useful everyday tools to our customers. We are innovating and working on creative solutions to help our customers manage their Frontify organizations and resources more efficiently. You’ll join the Product Platform team, where we are seeking a competent and curious Senior Backend Engineer who thrives on solving architectural challenges and getting things done. Your contributions will shape the scalability and performance of our Product.